I assume abstinence and monogamous relationships are the key. Failing that, condoms. After that, well, ya pays yer money and ya takes yer chances... I think. But I never bothered to educate myself as I decided after my divorce that I would be celibate until married. Of course, that would require a prior aids check. I have heard that such are not "100%" but, again, I have never researched it as I feel no need to get married again. Plus, cupid shoots arrows and I got yer bulletproof vest and some HD ordnance fer good measure. >;-)

Bitter? No thanks, I'll have a Bud.